code: def __init__(self):
      self.sources = []
  
file_path: mlflow/mlflow/data/dataset_source_registry.py
imports: import warnings
  from typing import Any, List, Optional
  import entrypoints
  from mlflow.data.artifact_dataset_sources import register_artifact_dataset_sources
  from mlflow.data.dataset_source import DatasetSource
  from mlflow.data.http_dataset_source import HTTPDatasetSource
  from mlflow.exceptions import MlflowException
  from mlflow.protos.databricks_pb2 import RESOURCE_DOES_NOT_EXIST
label_desc: Use image node_id 1 to create a new DatasetSourceRegistry object  with example: obj = DatasetSourceRegistry()